JDtc21

Hey guys, new to the forum. I wanted to know if anyone had any experience with changing an O2 sensor. I recently had the P0138 code thrown at me. That code says it is bank 1 sensor 2.
Does anyone know where that sensor is? Is it the one under the car or is it under the hood? Appreciate the help!

JDtc21

I actually just found a manual for the 2007 tC with the diagram of the wiring routing.

In this diagram it is saying bank 1 sensor 2 is H5.

My question now is...which sensor should I buy? At Autozone they said I needed to get this one:
http://www.autozone.com/autozone/par...7_0_1784_97999

I found this sensor on Napa's site:
http://www.napaonline.com/Catalog/Ca...149_0296300833

Does the plastic on the outside matter as long as the fit looks the same?

GammaTNT

iTrader: (8)

i would order the sensor from TRDSPARKS
http://www.trademotion.com/parts/200...iagram=8560150

JDtc21

Thanks. I found a few sites that have it for about $50 cheaper than autozone. Do you know if it is easy to get to that sensor when I go to change it?

JDtc21

And how urgent is it that I change it? I had the cel come on Friday. Reset it and drove around some yesterday and it didn't come on but after letting it cool and starting up tro drive again more it came back on.

GammaTNT

iTrader: (8)

I don't think it is urgent. i drove few hundred miles with the sensor missing. The Anti-Foul rusted off my S-pipe.
I am 90% sure the Bank 1 sensor 2 is the one at the S pipe. I need some one to verify that.
If that is the case, it is locate under the car. Stole this pic from Kaeon's DC header install.


spray on some WD40 or PB Blaster, and let it soak for 20 to 30 minutes before removing it.

JDtc21

Thanks again. So this one is definitely closer to the engine then? The only one I could find when I was under my car yesterday was toward the middle of the car.

GammaTNT

iTrader: (8)

There is only 1 of those sensor under the car. The one you saw must the same one in the earlier picture.
The other senor is under the hood.

That sensor is between the 2 red circle.

JDtc21

This photo looks like it is the air fuel ratio sensor (bank 1 sensor 1).

GammaTNT

iTrader: (8)

you are right, I always get those 2 confused.

N0AuTHoRiTy

iTrader: (3)

Bank 1 Sensor 2 would be the one on the s-pipe.

JDtc21

Ok so I changed the sensor this weekend. I drove home after changing it and no CEL came on. The next trip I made involved highway driving (speeds above 55 mph) and it came back on. Went to autozone for a reading and it has the same code as pending (P013 and also had (P2195). I cleared the code after installing the new sensor. I don't have the routine to drive it under 55mph for 20-40 miles.

Do you guys think the code will just clear after a bunch of successful cycles? They were just pending codes on the reader and not trouble codes. Any other suggestions? Should I unplug the battery or just let it run its course for now?